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Magnetism and Electromagnetism

Magnetism and Electromagnetism
In the left hand rule, forefinger always represents

Voltage
magnetic field
direction of force on the conductor
current

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Magnetism and Electromagnetism
A coil of wire is placed in a changing magnetic field. If the number of turns in the coil is decreased, the voltage induced across the coil will

Decrease
Increase
Remain Constant
Be excessive

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Magnetism and Electromagnetism
The magnetism left in the iron after exciting field has been removed is known as

residual magnetism
reluctance
permeance
susceptance

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Magnetism and Electromagnetism
A coil of wire is placed in a changing magnetic field. If the number of turns in the coil is decreased, the voltage induced across the coil will

Decreases
Remain same
Increases
None of the listed here

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Magnetism and Electromagnetism
The bar magnet has

Both dipole and monopole moment
None of the listed here
Dipole moment
Monopole moment

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Magnetism and Electromagnetism
The voltage induced across a certain coil is 200 mV. A 120 resistor is connected to the coil terminals. The induced current is

12 mA
120 mA
16 mA
1.7 mA

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MORE MCQ ON Magnetism and Electromagnetism

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